GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Modify steering ecu DIY

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Old 01-19-13, 04:57 PM
  #31  
SHIBUI1
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I need to install my SPORT DESIGN steering ECU, but haves no idea where it is located. Anyone have DIY instructions on installing a steering ECU for 2gs?
Old 01-20-13, 06:57 AM
  #32  
GS4hunnit
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Its in the footwell on the drivers side. You will have to remove the plastic piece right beneath the steering column then it will be right next to your parking brake or in that general area. Look on page 2 I believe, there are pictures. And BTW, I did this "mod" last night and im diggin the heavier "sportier" steering feel!
Old 01-21-13, 02:08 PM
  #33  
ClarisaRWD
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This has got to be one of the most functional DIYs here on the board. Awesome me likey
Old 01-18-15, 12:25 PM
  #34  
RichS11
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I know I'm digging up an old thread here but was there any movement on this as I have a spare ECU and would like to see if I can modify it. Sadly the images are all crossed out for me, would be nice to see if there was a DIY for it.

Thanks
Old 01-20-15, 11:06 AM
  #35  
Wrath
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Well I have gone and done this mod some time ago, so I think I could go take some pics for everyone but it will be a few hours before I can get a chance.
Old 01-20-15, 11:17 AM
  #36  
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Originally Posted by Wrath
Well I have gone and done this mod some time ago, so I think I could go take some pics for everyone but it will be a few hours before I can get a chance.
If it's not too much hassle Wrath I'd love to see them.
Old 01-20-15, 03:08 PM
  #37  
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well alright then this is how I did this mod. I did this around 2 or 3 years ago but I never took any pics, so these pics represent 5/6th of the work. Somewhere in my house may lurk the original resistor I pulled from the circuit board, if I can find it I'll snap a pic and post its value. IF I can find it... anyway, I removed the resistor and put a volume pot in its place. The pot was mounted on the bottom of the under-panel where the foot well light is.
Attached Thumbnails Modify steering ecu DIY-p8110350.jpg  
Old 01-20-15, 03:15 PM
  #38  
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Here is the back of the under-panel, the steering ecu is hanging by its connector but with panel in place the ecu rests on it. Access to the ecu is kinda tricky and in the second pic I try to capture the mounting bracket....
Attached Thumbnails Modify steering ecu DIY-p8110345.jpg   Modify steering ecu DIY-p8110344.jpg  
Old 01-20-15, 03:23 PM
  #39  
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So I was able to access it in the opening behind the parking brake release. In the second pic of the previous post, I had a flashlight underneath and could see the 10mm bolt holding the bracket in place. you cant see crap in this pic but this is where to poke the ratchet through, and i needed two extensions I think... Sorry but I got to go for now, but I'll finish up tonight, more pics too of the ecu itself and what i did in there.
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Old 01-20-15, 11:54 PM
  #40  
Wrath
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As for the ecu itself, I had to cut into it in order gain access to the circuit board. It didn't just slide out like the pdf made it look, mine was glued in place it seemed. So I de-solderd the resistor and put in a pair thin gauge wires to connect it to a 10k pot, then installed the pot on the bottom of the underpanel. So yes the pot controls the steering effort and you can even adjust it on the fly, though it takes a few seconds for it to register the change.
Attached Thumbnails Modify steering ecu DIY-p8110328.jpg   Modify steering ecu DIY-p8110329.jpg  
Old 01-21-15, 12:07 AM
  #41  
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Nice, fully adjustable! How have you found using it? None of the issues I've read about it hesitating at slow speeds like parking, etc?
Old 01-21-15, 12:13 AM
  #42  
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I would like to remount mine inside the change holder for a more creative location, and I keep the ecu entombed in tape to keep dust out. Anyway hope this helps, good luck to anyone that follows my method.
Attached Thumbnails Modify steering ecu DIY-p8110326.jpg  
Old 01-21-15, 12:28 AM
  #43  
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I haven't had any issues with any aspect of the steering, I like mine kinda heavy, but you just have to experiment with it a bit. and BTW on the under-panel there are two phillips head screws, two tabs, one visible, one not. and a slide tab of some sort on the back to keep the rear of the panel in place
Old 01-21-15, 01:07 AM
  #44  
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This is a great little modification. I've had the interior apart a lot as I've just swapped dashboards over! I take it this mod can be done to any of the PS modules? I have a spare from my '99 300, I'm going to have a look today and see what I can do with it.

Thanks again for your help.
Old 01-21-15, 01:35 AM
  #45  
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Just ordered the potentiometer. I'm guessing it doesn't matter if it's a linear or tapered pot', as they both do the same thing pretty much.


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